Finding the Third Proportional to 281,664 and 626,298.75

Step by Step Solution

1. Step 1: Write the proportion equation
   281,664 : 626,298.75 = 626,298.75 : x
2. Step 2: Convert to fraction form
   281,664/626,298.75 = 626,298.75/x
3. Step 3: Cross multiply
   281,664x = 626,298.75 × 626,298.75
4. Step 4: Simplify right side
   281,664x = 392,250,124,251.56
5. Step 5: Solve for x
   x = 392,250,124,251.56/281,664
6. Step 6: Final answer
   x = 1,392,617.18